package mapper;

import org.apache.ibatis.annotations.*;
import pojo.Brand;

import java.util.List;

public interface BrandMapper {
//    查询所有品牌
    @ResultMap("brandResultMap")
    @Select("select * from t_brand")
    List<Brand> selectAll();

    //    单个查询
    @ResultMap("brandResultMap")
    @Select("select *from t_brand where id = #{id}")
    Brand selectById(int id);

//    添加品牌
    @Insert("insert into t_brand values(null,#{brandName},#{companyName},#{ordered},#{description},#{status})")
    void add(Brand brand);

//修改一个品牌
@Update("update t_brand set brand_name=#{brandName},company_name=#{companyName},ordered=#{ordered},description=#{description},status=#{status} where id=#{id}")
void update(Brand brand);

//删除一个品牌
    @Delete("delete from t_brand where id=#{id}")
    void deleteById(int id);

    //以下是Page查询
    //1.查询某一页的数据
    @ResultMap("brandResultMap")
    @Select("select * from t_brand limit #{beginIndex},#{pageSize}")
    List<Brand> selectAllPage(@Param("beginIndex") int beginIndex,
                              @Param("pageSize") int pageSize);

    //查询总的数据条数
    @Select("SELECT count(1) FROM t_brand")
    int selectCount();


    @ResultMap("brandResultMap")
    @Select("<script>" +
            "select * from t_brand where 1=1   " +
            "<if test=\"brandName != null and brandName != ''\">\n" +
            "                and brand_name LIKE #{brandName}\n" +
            "            </if>"+
            "<if test='status!=null'>" +
            " and t_brand.status=#{status}" +
            "</if>" +
            "</script>")
    List<Brand> SelectStatusAllServlet(@Param("status") int status,
                            @Param("brandName") String brandName);

    //批量删除
    void deleteByIds(@Param("ids") int[] ids);
}
